Firefox 3 locks up my PC after an hour or so of use.




9 years ago
9 years ago


(Reporter: Chuck Hastings, Unassigned)



3.0 Branch
Windows 2000

Firefox Tracking Flags

(Not tracked)




9 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv: Gecko/2008092417 Firefox/3.0.3
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv: Gecko/2008092417 Firefox/3.0.3

I'm using Firefox 3.0.3 on an oldie-but-solid 450MHz Dell PC running Windows2000.  I access the CPU's Win2K percentage-usage window routinely.  I get national/political news from The Washington Post website, although I am across the country in metro Seattle.  After navigating around the WaPo website for an hour or two, my PC locks up and the usage screen shows that Firefox is taking 95% to 98% of the available CPU cycles and 120 mbytes of sream  (versus 70 mbytes when I first start Firefox up).  Closing and then reopening Firefox sometimes suffices to restore reasonable navigation, but not always — so I need several reboots every day.  I did not have this problem with early versions of Firefox 2, although I began to have it with later Firefox 2 versions before upgrading to Firefox 3.

Reproducible: Always

Steps to Reproduce:
1. Reboot and launch Win2K and Firefox 3.
2. Access
3. Navigate through a couple of lengthy stories having 3, 4, or 5 parts.
Actual Results:  
See above.

Expected Results:  
Not locked up.  Not taken over my PC's cycles completely, nor bloated its sram usage.

I have had this lockup problem when accessing other websites besides WaPo, but less frequently.
Please read
Version: unspecified → 3.0 Branch

Comment 2

9 years ago
install flashblock addon
does situation improve?
if not, do you see the problem when started in safe mode?
Severity: critical → major
Keywords: perf
Whiteboard: closeme 2008-12-12
@Reporter, we have not heard back from you in a while, so I am closing this bug as INCOMPLETE. You can reopen this bug if more information becomes available. Some helpful information you can provide us is found at You should also use a recent version of Firefox, from
Last Resolved: 9 years ago
Resolution: --- → INCOMPLETE
Whiteboard: closeme 2008-12-12
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